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Finding the Fourth Proportional to 12,089.91, 16,674.18 and 7,309.50

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Solution

The fourth proportional to 12,089.91, 16,674.18 and 7,309.50 is: 10,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.91 : 16,674.18 = 7,309.50 : x
  2. Step 2: Convert to fraction form
    12,089.91/16,674.18 = 7,309.50/x
  3. Step 3: Cross multiply
    12,089.91x = 16,674.18 × 7,309.50
  4. Step 4: Simplify right side
    12,089.91x = 121,879,918.71
  5. Step 5: Solve for x
    x = 121,879,918.71/12,089.91
  6. Step 6: Final answer
    x = 10,081.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.